Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2007-03-27
2007-03-27
Elmore, Stephen C. (Department: 2185)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S100000, C711S104000, C711S105000, C711S154000, C711S165000, C711S170000
Reexamination Certificate
active
10721086
ABSTRACT:
It is aimed to detect, notify, and save an abnormal area in semiconductor memory for greatly improving reliability. An inside of semiconductor memories provided for a memory card comprises a user area, a substitution area, an area substitution information storage area, and a management area. An inside of semiconductor memories comprises a user area, a substitution area, and a management area. The user area is a data area a user can use. The substitution area is substituted when an error occurs in the user area. The area substitution information storage area stores area substitution area information. The management area stores substitution information. The information processing section performs substitution on two levels as follows. When detecting an operation indicating a symptom of failure in a semiconductor memory area, the information processing section performs area substitution during an idle state of the memory card. When detecting a faulty operation in an area, the information processing section immediately performs area substitution.
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Goto Hiroyuki
Hara Fumio
Shibuya Hirofumi
Shiota Shigemasa
Elmore Stephen C.
Kim Daniel
Miles & Stockbridge P.C.
Renesas Technology Corp.
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